温度对整辊内嵌式板形检测辊过盈配合的影响

 在用整辊内嵌式板形检测辊检测可逆冷轧生产过程中带钢的在线板形状况时，板形检测辊的热变形影响辊体内孔面与传感器顶部间过盈配合面的接触状况，引起板形检测信号的间断消失。以整辊内嵌式板形检测辊为研究对象，应用有限元技术对冷轧可逆轧制各道次中检测辊辊体内孔面与骨架顶部过盈配合面各节点副的温度差值、径向相对位移进行模拟分析，获取温度差值对各节点副相对位移和传感器预压力的影响规律。分析结果表明，第3道次各节点副的温度差值最大，大部分节点副的径向相对位移超过配合过盈量，使得传感器预压力接近零，严重影响带钢作用在辊体表面的压力传递，容易造成板形检测信号的中断。

Influence of temperature on interference fit of entire roller embedded shapemeter roll

In the process of cold reversible strip flatness detected by entire roller embedded shapemeter roll,the contact condition of interference fit surface between the top surface of framework and the inner hole surface of roll body is af-fected by thermal deformation,so the cold strip flatness detection signal may be interrupted or even disappeared. For en-tire roller embedded shapemeter roll,the temperature differences and radial relative displacements of contact node pairs on the interference fit surface between the top surface of framework and the inner hole surface of roll body,were ana-lyzed using the finite element technology in cold reversible rolling passes. The influences of temperature differences on radius relative displacements of the contact node pairs and the sensor pre-pressure were obtained. The results show that the maximum temperature difference of the contact node pair occurs in the third rolling pass,and most of radial relative displacements of contact node pairs exceed the value of interference fit,which makes the sensor pre-pressure be close to zero. So the transfer of pressure that the strip applied on the outer surface of shapemeter roll is seriously affected,and the shape measuring signal is interrupted.